Speaking strictly for my area, banning house shots would be devastating. I could see losing at least half of all bowlers. Even with easy patterns and high tech balls, the number of honor scores are fairly low. True, averages are higher but the majority are still not 200 and above. If we force the majority to bowl on tough patterns, they're just not going to have fun bowling 120 games. And for what it costs to bowl and all the other things they could be doing... they'd just stop bowling. I don't really care for how bowling has evolved over the last thirty years but i definitely don't want to see the sport lose more people.
Some people seem to think that if a 220 average bowler drops 30 pins to 190 because of a tougher pattern, than a 165 average bowler drops to 135. It doesn't work that way.
We run a true sport league, and have been for about 10 years now, and the league is made up of all styles and levels or competitors, as it isn't a money league, more a league for education. The drop in a bowlers average is definitely on a curve.
Besides, no one, including the USBC, is saying that all leagues should go to a "SPORT" condition. Most people who have voiced their opinion in favor of it, would just like to see a little more of a blend, instead of a flat out wall, to at least showcase good bowling to equate to good "scoring". There have been multiple times in my life, that I have thrown the ball not great for a set, but "scored" really high because of all the miss area on the lane, BUT have also had those times that I have thrown the ball great, but scored marginally because of lack of carry and subsequent transition, because I wasn't throwing it bad enough to "use the pattern". Throw five shots at five different places on the lane, and ALL five strike, you are still bowling on a fresh shot. Label five shots on top of each other, you have altered the pattern more, and will change the shot.
Another problem is vocabulary in this industry. If the shot isn't called a "house shot", than it MUST be a "sport shot", and bowlers think that way and get their panties in a bunch before ever throwing a shot. It's just not true.
Use the term "modified house shot", and people perceive it as easier than calling a shot a "challenge pattern", when in all fairness, they probably have about the same ratios.